Freebase(0.00 / 0 votes)Rate this definition: Serval. The serval is a medium-sized African wild cat. DNA studies have shown that the serval is closely related to the African golden cat and the caracal. Chambers 20th Century Dictionary (0.00 / 0 votes) Rate this definition:
Word forms: plural harrows. countable noun. A harrow is a piece of farm equipment consisting of a row of blades fixed to a heavy frame. When it is pulled over ploughed land, the blades break up large lumps of soil.
Shallow earth grounds are those where a single-length (typically eight-feet long) copper-clad ground rod is driven into the ground to which a grounding wire or strap is attached to the top. Deep earth grounds ause multiple grounding rods coupled together and driven to depths of 20 to 60 feet or more.